William Stanley Jevons (1835–1882) English economist and logician
Preface.
Elementary Lessons on Logic (1870)
As quoted in Dictionary of Scientific Biography (1970 - 1990) edited by M Steck.
William Stanley Jevons (1835–1882) English economist and logician
Preface.
Elementary Lessons on Logic (1870)
Immanuel Kant book Metaphysical Foundations of Natural Science
Preface, Tr. https://books.google.com/books?id=OCJLAAAAMAAJ Ernest Belfort Bax (1883) <br class="br">Metaphysical Foundations of Natural Science (1786)
“Logic is the most useful tool of all the arts. Without it no science can be fully known.”
William of Ockham book Sum of Logic
Summa Logicae (c. 1323), Prefatory Letter, as translated by Paul Vincent Spade (1995) http://www.pvspade.com/Logic/docs/ockham.pdf <br class="br">Context: Logic is the most useful tool of all the arts. Without it no science can be fully known. It is not worn out by repeated use, after the manner of material tools, but rather admits of continual growth through the diligent exercise of any other science. For just as a mechanic who lacks a complete knowledge of his tool gains a fuller [knowledge] by using it, so one who is educated in the firm principles of logic, while he painstakingly devotes his labor to the other sciences, acquires at the same time a greater skill at this art.
Robert Chambers (publisher, born 1802) (1802–1871) Scottish publisher and writer
Robert Chambers, Chambers's Information for the People (1875) Vol. 2 https://books.google.com/books?id=vNpTAAAAYAAJ
“It is clear that economics, if it is to be a science at all, must be a mathematical science.”
William Stanley Jevons The Theory of Political Economy
Source: The Theory of Political Economy (1871), Chapter I, Introduction, p. 38.
Joseph Addison (1672–1719) politician, writer and playwright
No. 447 (2 August 1712).
The Spectator (1711–1714)
Thomas Kuhn book The Structure of Scientific Revolutions
Source: The Structure of Scientific Revolutions (1962), II. The Route to Normal Science, p. 10
David Hilbert Mathematical Problems
Mathematical Problems (1900)
Context: Mathematical science is in my opinion an indivisible whole, an organism whose vitality is conditioned upon the connection of its parts. For with all the variety of mathematical knowledge, we are still clearly conscious of the similarity of the logical devices, the relationship of the ideas in mathematics as a whole and the numerous analogies in its different departments. We also notice that, the farther a mathematical theory is developed, the more harmoniously and uniformly does its construction proceed, and unsuspected relations are disclosed between hitherto separate branches of the science. So it happens that, with the extension of mathematics, its organic character is not lost but only manifests itself the more clearly.
Mahmoud Ahmadinejad (1956) 6th President of the Islamic Republic of Iran
Columbia University speech, 24 September 2007
[24 September 2007, http://www.azstarnet.com/sn/hourlyupdate/202820.php, "Iran's president at Columbia University - a transcript", azstarnet.com, 2007-09-25]
2007
“Logic is neither a science nor an art, but a dodge.”
Benjamin Jowett (1817–1893) Theologian, classical scholar, and academic administrator
Letters